The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2001
Filed:
Jan. 25, 1999
Applicant:
Inventor:
Adam R. Talcott, San Jose, CA (US);
Assignee:
Sun Microsystems, Inc., Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/38 ;
U.S. Cl.
CPC ...
G06F 9/38 ;
Abstract
A branch prediction scheme predicts whether a computer instruction will cause a branch to a non-sequential instruction. A prediction counter is selected by performing an exclusive or (XOR) operation between bits from an instruction address and a hybrid history. The hybrid history, in turn, is derived by concatenating bits from a global history register with bits from a local branch history table. The bits from the local branch history table are accessed by using bits from the instruction address.